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PT and Oceans Review
Review for Plate Tectonics and Oceans
| Word or Question | Definition or Answer |
|---|---|
| Boundary type that means "pull apart" | Divergent |
| Boundary type that means "push together" | Convergent |
| Boundary type that "slides" past each other | Transform |
| At what type of boundary would I find a volcanic island chain, like Hawaii? | Convergent- ocean/ocean |
| At what type of boundary would I find a volcanic ridge, like the Cascade Range, here in Oregon? | Convergent- ocean/continent |
| At what type of boundary would I find a mountain range that grows, such as the Himalayan Mountains? | Convergent- continent/continent |
| At which type of boundary might we see a pattern of earthquakes? | Transform |
| At which type of boundary might we find volcanoes or a mid-ocean ridge, such as the Ring of Fire? | Divergent |
| stress | the forces that push and pull on the earth's crust |
| compression | squeeze (push) |
| tension | pulling |
| shearing | 2 pieces pushed in opposite directions |
| strain | the way a rock deforms in response to stress |
| brittle | breaking or fracturing |
| ductile | flowing like a thick fluid |
| elastic | bending or deforming with stress, but will return to its original shape when the stress is released |
| faulting | the crack along which rocks move |
| folding | a bend in the rock layer |
| domes | the uplifted area created by rising magma |
| waves | energy that moves across the surface of the water |
| tides | the rise and fall of sea level |
| currents | the direction of flow of a body of water |
| How are waves formed? | Due to the foces exerted by wind on the water surface |
| How are tides formed? | Due to the interaction of gravitational forces between the Earth, Sun, and Moon. |
| How are Currents formed? | As a result of temperature differences on the ocean surface |
| How do waves move? | side to side |
| How do tides move? | up and down, changing the depth of the water |
| How do currents move? | clockwise in the N. hemisphere, counter-clockwise in the southern hemisphere |